package com.example.demo.customer;

import com.example.demo.exception.NotFoundException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class CustomerService {

    private final static Logger LOGGER = LoggerFactory.getLogger(CustomerService.class);
    private final CustomerRepository customerRepository;

    @Autowired
    public CustomerService( CustomerRepository customerRepository){
        this.customerRepository=customerRepository;
    }

    List<Customer> getCustomers(){
        LOGGER.info("getCustomers caller");
        return customerRepository.findAll();
    }

    Customer getCustomer(long id){
        return  customerRepository
                .findById(id)
                .orElseThrow(()-> { NotFoundException notFoundException= new NotFoundException("customer " + id  + " 无法找到");
        LOGGER.error("error:getCustomer{}"+id,notFoundException);
        return notFoundException;
    });
}
}